Comet

Link. And info:

At 10 p.m. on the northwest horizon, you will see the stars Castor and
Pollux, the heads of the Gemini twins. Comet McNaught (C/2009 R1) should be
swooping in from the north and above Castor, at magnitude 4.7. While that is
only as bright as the stars in the handle of the Little Dipper, the comet's tail
will give it away in a pair of binoculars, if not to the unaided eye.

Related picture here.